Taming The Terminal
So ummm, I said I was going to try and work on this page, and I hate to be a liar, atleast a big one. So I will include whatever resources I seemed to think helped me. Keep in mind if you are taking advice from a no talent hack that, has yet to write even a widget to his god-forgotten name, and has had about 4 beers before tapping at the keyboard 
. You have been warned. As well these are geared towards OS X, Linux and Unix will have similar commands for most of them but as Monsieur Vallesco (sorry, no better link) informed me alot of the flags are completely different.
Terminal commands: There are alot, in fact here are all of them according to www.ss64.com (there are more but this is a good list). That being said, there are more that are Mac specific, such as this popular OS X list (most of these are vanity items).
So what are you going to use everyday?
Here are some of my suggestions, and some others who are credible:
top - this was the top voted answer for many different users. Much like Activity monitor, but more dynamic and adjustable via flags. somebody had suggested the -ocpu flag, I ound this not so much, which proccess moves to the top of the stack every three seconds (default refresh period, for OS X)
ssh - if you happen to admin servers this is “bringing sexy back”™
pwd - uhhh where am I anyways,
ls - there are more flags to this than you can shake a stick to, I happen to like -l (who has permissions) -a (shows hidden UNIX files)
cd .. - moves you back a directory, not really a flag or argument, but usefull none the less.
du - shows the disk useage flag -h makes it actually useable
ipconfig - how I love thee, when solving a conenection issue invaluable next to ping
ping - need I say more
Server Oriented Commands:
tail - 10/library/logs/software\ Update.log - shows the last 10 changesto the software log
There are plenty more and I promise to add more to this page but, I am tired 
, promise to edit more soon.